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Author Question: The force of gravity on a bowling ball rolling along a horizontal surface doesn't change its speed ... (Read 102 times)

imanialler

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  • Posts: 539
on: Jul 29, 2018
The force of gravity on a bowling ball rolling along a horizontal surface doesn't change its speed because the force is
 
  A) small compared to the ball's weight.
  B) canceled by the normal force.
  C) perpendicular to its direction of motion.
  D) canceled by friction.

Question 2

What holds Earth satellites up so they don't crash into Earth?
 
  A) gravity
  B) centripetal force
  C) centrifugal force
  D) the absence of air resistance
  E) nothing, they continually fall fast enough around Earth not to crash


mjenn52

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: E


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